Base duo loses one SSD after a while

Bought the base duo a few months ago, paired it with two WD Black SN850X, using OMV and have created a LVM volume.

Occasionally one of the SSD is lost, so only one appears??? Temp is 45-49 drgresse (celcius) when this happens…

Any ideas what the issue may be??

EDIT is powered through a hifiberry amp4 with a 80watt power supply…